JP3031996B2 - Separate lubrication two-stroke engine - Google Patents
Separate lubrication two-stroke engineInfo
- Publication number
- JP3031996B2 JP3031996B2 JP2319693A JP31969390A JP3031996B2 JP 3031996 B2 JP3031996 B2 JP 3031996B2 JP 2319693 A JP2319693 A JP 2319693A JP 31969390 A JP31969390 A JP 31969390A JP 3031996 B2 JP3031996 B2 JP 3031996B2
- Authority
- JP
- Japan
- Prior art keywords
- intake passage
- engine
- oil
- valve
- lubricating oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
- F02M13/06—Arrangements of two or more separate carburettors; Carburettors using more than one fuel the carburettors using different fuels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、分離潤滑装置を備える分離潤滑式２サイク
ルエンジンに関するものである。Description: TECHNICAL FIELD The present invention relates to a separated lubrication type two-stroke engine provided with a separated lubrication device.
［従来の技術］ 海上にて使用されるマリンエンジン、あるいは海岸地
帯で使用されるエンジンにあっては、吸気の中に塩分が
含まれることがあり、これが気化器の吸気通路を通過す
る際、回転式のチョークバルブやスロットバルブに付着
し、あるいは停止したままであっても、海岸地帯におい
ては塩分による腐食性の雰囲気によりバルブが固着する
ことがあった。本出願人は、分離潤滑式２サイクルエン
ジンにおいて、このバルブ固着を防止できるものとし
て、先に特願昭62−185605号（特願昭64−32010号）を
提案した。[Related Art] In a marine engine used at sea or an engine used in a coastal zone, salt may be included in intake air, and when this passes through an intake passage of a carburetor, Even if it adheres to a rotary choke valve or a slot valve or remains stopped, the valve sometimes sticks in a coastal area due to a corrosive atmosphere due to salt. The present applicant has previously proposed Japanese Patent Application No. 62-185605 (Japanese Patent Application No. 64-32010) as a device capable of preventing the sticking of the valve in a separate lubrication two-cycle engine.
これは、分離潤滑装置の潤滑油吐出口を吸気通路のス
ロットルバルブ上流位置に開口せしめた、あるいは潤滑
油吐出口をチョークバルブ上流位置に開口せしめるもの
である。吐出される潤滑油はスロットルバルブはチョー
クバルブの軸受部を潤滑した後、気化器から供給される
燃料および空気とともにエンジン内部に吸引され、クラ
ンク軸支持軸受、ピストンのシリンダ内摺動部を潤滑す
る。This means that the lubricating oil discharge port of the separation lubrication device is opened at a position upstream of the throttle valve in the intake passage, or the lubricating oil discharge port is opened at a position upstream of the choke valve. After the lubricating oil is discharged, the throttle valve lubricates the bearing portion of the choke valve, and is then sucked into the engine together with the fuel and air supplied from the carburetor to lubricate the crankshaft support bearing and the sliding portion of the piston in the cylinder. .
［発明が解決しようとする課題］ 上記出願人提案の分離潤滑式２サイクルエンジンは、
提案以前の気化器下流に吐出口を持つものに比してバル
ブ固着防止性において優れるものであるが、しかし、吐
出口を気化器吸気通路の中心に配置するものであり、特
に潤滑油量の少ない低速においてバルブの軸受部に充分
な潤滑油が供給されない。このため、低速で長い時間運
転後高速にすることなく運転を停止し、その後長期間運
転することなく保管する場合に、バルブの軸受部が塩分
により腐食し、固着を起こす可能性があった。[Problem to be Solved by the Invention] The separated lubrication type two-cycle engine proposed by the applicant is
It is superior in the valve sticking prevention property as compared with the one having a discharge port downstream of the carburetor before the proposal, however, the discharge port is arranged at the center of the carburetor intake passage, and especially the amount of lubricating oil At a low speed, sufficient lubricating oil is not supplied to the bearing of the valve. For this reason, when the operation is stopped at a low speed for a long period of time without operating at a high speed and then stored without operating for a long period of time, the bearing portion of the valve may be corroded by salt and may stick.
また、航海中の転倒を許容する小型滑走艇等、海水が
進入しやすいエンジンルーム内に収容される分離潤滑式
２サイクルエンジンにおいては、通常の使用によっても
バルブ固着が発生する可能性もある。Also, in a separate lubrication type two-stroke engine housed in an engine room where seawater is likely to enter, such as a small planing boat that allows toppling during voyage, valve sticking may occur even in normal use.
そして、スロットルバルブに固着が発生すると、加減
速制御が困難になる問題がある。また、チョークバルブ
に固着が発生すると、寒冷時の始動が困難となる場合が
ある。Then, if sticking occurs in the throttle valve, there is a problem that acceleration / deceleration control becomes difficult. In addition, if the choke valve sticks, it may be difficult to start in cold weather.
本発明は、吸気通路に設けられた回転式バルブの潤滑
をより促進し、これに固着が発生するのを確実に防止
し、常に安定したエンジンの運転が可能な分離潤滑式２
サイクルエンジンを提供することを目的とする。The present invention further enhances lubrication of a rotary valve provided in an intake passage, reliably prevents sticking of the rotary valve, and ensures a stable lubrication of the engine.
It aims to provide a cycle engine.
［課題を解決するための手段］ 上記目的を達成するために、本発明における分離潤滑
式２サイクルエンジンは、上流側が上，下流側が下に位
置するように上下方向に延在する吸気通路に、両側の軸
受部が該吸気通路の壁に軸支されるように設けられた回
転式バルブを潤滑するよう、オイルタンク内の潤滑油を
オイルポンプにより吸気通路に吐出するようにした分離
潤滑式２サイクルエンジンにおいて、潤滑油の吐出口
を、前記回転式バルブの軸受部の真上に位置して前記吸
気通路の壁に開口させたことを特徴とするものである。[Means for Solving the Problems] In order to achieve the above object, a separate lubrication type two-stroke engine according to the present invention includes an intake passage extending vertically so that an upstream side is located at an upper side and a downstream side is located at a lower side. Separate lubrication system 2 in which lubricating oil in an oil tank is discharged to an intake passage by an oil pump so as to lubricate a rotary valve provided so that bearing portions on both sides are axially supported by walls of the intake passage. In the cycle engine, a discharge port for lubricating oil is located just above a bearing portion of the rotary valve and is opened in a wall of the intake passage.
［作用］ 上流側が上，下流側が下に位置するように上下方向に
延在する吸気通路に両側の軸受部が該吸気通路の壁に軸
支されるように設けられた回転式バルブで、潤滑油の吐
出口を、前記回転式バルブの軸受部の真上に位置して吸
気通路の壁に開口させたので、吐出口から供給された潤
滑油は、吸気流および重力により吸気通路の表面を流
れ、前記軸受部に確実に供給される。[Operation] A rotary valve provided in an intake passage extending in the vertical direction such that the upstream side is located upward and the downstream side is located downward, and bearing portions on both sides are provided so as to be axially supported by walls of the intake passage. Since the oil discharge port is located just above the bearing portion of the rotary valve and opened to the wall of the intake passage, the lubricating oil supplied from the discharge port causes the surface of the intake passage to flow through the intake flow and gravity. Flow and are reliably supplied to the bearing portion.
［実施例］ 添付の図面を参照して本発明の実施例について説明す
る。Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings.
第１図は本発明の分離潤滑式エンジンを搭載する小型
滑走艇の長手方向の要部断面図、第２図は分離潤滑式エ
ンジンの要部横断面図、第３図は本発明の第１実施例を
図示する吸気装置の断面図、第４図は第３図のIV−IV線
に沿った断面図である。FIG. 1 is a longitudinal sectional view of a main part of a personal watercraft equipped with a separate lubrication engine of the present invention, FIG. 2 is a cross sectional view of a main part of a separate lubrication engine, and FIG. FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3, showing the intake device illustrating the embodiment.
第１図に示される如く、船体10の後方下部に推進ユニ
ットとしての水噴射ユニット12が設置され且つ船体10の
中央から前寄りのエンジンルーム13内にエンジン14が搭
載されている。水噴射ユニット12は、主としてインペラ
16、プロペラ軸18及び操舵ノズル20を備え、プロペラ軸
18の入力側端部は前記エンジン14へカップリング22を介
して連結され、これによってエンジン14の動力をトルク
変動を軽減しながらプロペラ軸18へ伝達するようになっ
ている。As shown in FIG. 1, a water injection unit 12 as a propulsion unit is installed at a lower rear portion of the hull 10, and an engine 14 is mounted in an engine room 13 located forward from the center of the hull 10. The water injection unit 12 mainly includes an impeller
16, equipped with a propeller shaft 18 and a steering nozzle 20, a propeller shaft
An input end of the engine 18 is connected to the engine 14 via a coupling 22 so that the power of the engine 14 is transmitted to the propeller shaft 18 while reducing torque fluctuation.
インペラ16は、プロペラ軸18を介して駆動され、水を
船底24の水取入口26から取り入れ、操舵ノズル20から船
体10の後方へ噴射する役目を有している。The impeller 16 is driven via a propeller shaft 18, and has a function of taking in water from a water inlet 26 of a bottom 24 and injecting the water from a steering nozzle 20 to the rear of the hull 10.
エンジンルーム13は気水分離器28、空気取入口30を介
して船外と連通している。The engine room 13 communicates with the outside of the boat via a steam separator 28 and an air inlet 30.
なお、32は操舵ノズル20を回動させる操舵ハンドル、
33は吸気サイレンサー、34は気化器、35はオイルポン
プ、36a,36bは給油管、37は排気膨張室、38a,38bは排気
管、39は燃料タンク、40は点火プラグ、そして41はエン
ジンを防振支持するマウントである。In addition, 32 is a steering wheel for rotating the steering nozzle 20,
33 is an intake silencer, 34 is a carburetor, 35 is an oil pump, 36a and 36b are oil supply pipes, 37 is an exhaust expansion chamber, 38a and 38b are exhaust pipes, 39 is a fuel tank, 40 is a spark plug, and 41 is an engine. A mount that supports vibration isolation.
第２図、第３図に示す如く、エンジン14は主に、シリ
ンダヘッド42、シリンダブロック43、クランクケース44
からなるエンジン本体と、排気装置、吸気装置、点火プ
ラグ40を配した点火装置、及び潤滑油を供給する潤滑装
置よりなる分離潤滑式２サイクルエンジンである。As shown in FIGS. 2 and 3, the engine 14 mainly includes a cylinder head 42, a cylinder block 43, and a crankcase 44.
, An ignition device provided with an exhaust device, an intake device, a spark plug 40, and a lubrication device for supplying lubricating oil.
すなわち、新気はクランク軸47の一回転ごとに、サイ
レンサー33から気化器34へ供給され、燃料を混合され
て、吸気マニホールド48、リード弁49を経てクランク室
50に供給される。この新気混合気は掃気ポート51から２
気筒からなるシリンダブロック43の内の一つのシリンダ
内52aに入り、点火燃焼後、排気ポート53から排気管38
a、排気膨張室37及び排気管38bを経て、船外に排出され
る。なお、55はコンロッド、56はピストンである。That is, fresh air is supplied from the silencer 33 to the carburetor 34 every one revolution of the crankshaft 47, where the fuel is mixed and passed through the intake manifold 48 and the reed valve 49 to the crank chamber.
Supplied to 50. This fresh air mixture is supplied from scavenging port 51 to 2
After entering the cylinder 52a of one of the cylinder blocks 43 composed of cylinders, and after ignition and combustion, the exhaust pipe 53
a, is discharged outboard through the exhaust expansion chamber 37 and the exhaust pipe 38b. 55 is a connecting rod and 56 is a piston.
気化器34は第３図、第４図に示される如く、フロート
レスタイプの気化器であり、上流側が上，下流側が下に
位置するように上下方向に延在する吸気通路34a中に形
成されるベンチュリー管60内には、燃料吐出口61が開口
する小ベンチュリー62が突出しており、該小ベンチュリ
ー62の上流、下流にはそれぞれチョークバルブ63、スロ
ットルバルブ64が上下に軸部が平行となるように配置さ
れている。両側の軸受部63a,63bが吸気通路34aの壁に軸
支されるように設けられたチョークバルブ63が軸受部63
a,63bの外側には、オイルシール65.65が配設され、同じ
く両側の軸受部64a,64bが吸気通路34aの壁に軸支される
ように設けられたスロットルバルブ64の軸受部64a,64b
の外側には、オイルシール66.66が配設され、各軸受部
の気密・液密性が保たれている。The carburetor 34 is a floatless type carburetor as shown in FIGS. 3 and 4, and is formed in an intake passage 34a extending vertically so that the upstream side is located at the upper side and the downstream side is located at the lower side. Inside the venturi pipe 60, a small venturi 62 having a fuel discharge port 61 opening protrudes, and a choke valve 63 and a throttle valve 64 are provided in the upstream and downstream of the small venturi 62, respectively. Are arranged as follows. The choke valve 63 is provided so that the bearings 63a and 63b on both sides are supported by the wall of the intake passage 34a.
Oil seals 65.65 are disposed outside the a and 63b, and the bearings 64a and 64b of the throttle valve 64 are provided such that the bearings 64a and 64b on both sides are also supported by the wall of the intake passage 34a.
An oil seal 66.66 is provided outside the, so that the airtightness and liquid tightness of each bearing portion are maintained.
一方、オイルタンク70内の潤滑油は、フィルター71、
潤滑油管72a、空気進入防止器73、潤滑油管72bを経て、
クランク軸47によって駆動されるオイルポンプ35から給
油管36a、36b、サイレンサー33の吐出口75a、75bを経て
気化器34に供給可能とされている。潤滑油の供給量はエ
ンジン回転数が高い程（あるいはエンジン負荷が高い
程、あるいはエンジン回転数及びエンジン負荷の両方が
高い程）、多くなるよう制御される。On the other hand, the lubricating oil in the oil tank 70
Via the lubricating oil pipe 72a, the air entry preventer 73, and the lubricating oil pipe 72b,
The oil can be supplied from the oil pump 35 driven by the crankshaft 47 to the carburetor 34 via the oil supply pipes 36a and 36b and the discharge ports 75a and 75b of the silencer 33. The supply amount of the lubricating oil is controlled to increase as the engine speed increases (or as the engine load increases, or as both the engine speed and the engine load increase).
なお、76aは給油管36aの、76bは給油管36bの、それぞ
れ途中に配設され、油の逆流を防止するための逆止弁で
ある。77はオイルタンク70内への油補給用キャップ、78
は油レベル検出器であり、フロート79と、フロート79が
備える磁石により作動せしめられる警報出力用リードス
イッチ80を有して構成される。81は、小型滑走艇が転倒
した後空気が空気進入防止器73を通過した場合でも、空
気をタンク内へ戻すための空気戻り管であり、82は空気
戻り管81のオイルタンク70側端部に設けられる逆止弁で
ある。A check valve 76a is provided in the oil supply pipe 36a, and a check valve 76b is provided in the oil supply pipe 36b to prevent the oil from flowing back. 77 is an oil supply cap for oil tank 70, 78
Denotes an oil level detector, which includes a float 79 and an alarm output reed switch 80 which is activated by a magnet provided in the float 79. Reference numeral 81 denotes an air return pipe for returning the air into the tank even when the air passes through the air entry preventer 73 after the personal watercraft has fallen, and 82 denotes an end of the air return pipe 81 on the oil tank 70 side. Is a check valve.
上部吸気通路33aに供給される潤滑油は、新気混合気
とともにクランク室50に吸引され、コンロッド55の大端
軸受90、クランク軸支持軸受91、ピストン56の外周のシ
リンダ摺動部56b等を潤滑する。そして、潤滑油は掃気
ポート51からシリンダ内52aに入り、燃焼することによ
り消耗する。The lubricating oil supplied to the upper intake passage 33a is sucked into the crank chamber 50 together with the fresh air mixture, and flows through the large end bearing 90 of the connecting rod 55, the crank shaft support bearing 91, the cylinder sliding portion 56b on the outer periphery of the piston 56, and the like. Lubricate. Then, the lubricating oil enters the cylinder 52a from the scavenging port 51 and is consumed by burning.
本実施例の小型滑走艇は、エンジンルーム内に船外の
海水ミストが進入するのを防止するため気水分離器28を
設けてはいるが、完全に海水ミストを除去するのは困難
である。また、この小型滑走艇は転倒しても復元させれ
ば、直ちに航行可能とされている。この転倒時海水ミス
トがエンジンムール内に進入することがある。このエン
ジンルーム内に進入する海水ミストは、気化器のチョー
クバルブあるいはスロットルバルブの軸受部に付着する
ことがある。Although the personal watercraft of this embodiment is provided with the steam separator 28 to prevent the outboard seawater mist from entering the engine room, it is difficult to completely remove the seawater mist. . In addition, if the personal watercraft is restored even if it falls, it can be navigated immediately. When this falls, the seawater mist may enter the engine mul. The seawater mist entering the engine room may adhere to a bearing of a choke valve or a throttle valve of a carburetor.
一方、本実施例の吐出口75a,75bはチョークバルブ63
の軸受部63a,63bの吸気通路の上流側且つ上方の真上に
位置するので、各吐出口75a,75bからの潤滑油は吸気流
により、さらに重力により吸気通路33a,34aの表面を流
れ、それぞれ軸受部63a,63bに供給される。同様に、ス
ロットルバルブ64の軸受部64a,64bは各々チョークバル
ブ63の軸受部63a,63bの吸気通路の下流側且つ下方に位
置するので、チョークバルブ63の軸受部63a,63bを潤滑
後の潤滑油が吸気流により、さらに重力によりベンチュ
リー管60および吸気通路34aの表面を流れ、軸受部64a,6
4bに供給される。On the other hand, the discharge ports 75a and 75b of this embodiment
Because the bearings 63a, 63b are located just above and upstream of the intake passage of the intake passages, the lubricating oil from each of the discharge ports 75a, 75b flows on the surfaces of the intake passages 33a, 34a by gravity, and further by gravity. These are supplied to the bearings 63a and 63b, respectively. Similarly, since the bearing portions 64a and 64b of the throttle valve 64 are located downstream and below the intake passage of the bearing portions 63a and 63b of the choke valve 63, the lubrication of the bearing portions 63a and 63b of the choke valve 63 after lubrication is performed. Oil flows on the surface of the venturi tube 60 and the intake passage 34a by the intake air flow and further by gravity, and the bearing portions 64a, 6
Supplied to 4b.
以上のように、各軸受部63a,63b,64a,64bは確実に潤
滑されるので、軸受部に付着する海水ミストにより軸と
軸受部が固着することは確実に防止される。As described above, since the bearings 63a, 63b, 64a, 64b are reliably lubricated, the shaft and the bearings are reliably prevented from sticking due to seawater mist adhering to the bearings.
第５図は本発明の第２実施例の分離潤滑式２サイクル
エンジンの気化器の断面図である。FIG. 5 is a sectional view of a carburetor of a separate lubrication two-cycle engine according to a second embodiment of the present invention.
この実施例では、気化器34はチョークバルブを持た
ず、代わりに始動時全閉のスロットルバルブ64を迂回し
て濃混合気を供給する始動気化器100が配設されてい
る。始動気化器100は、気化器34に一体に形成され、ス
ロットルバルブ64を迂回する吸気通路101と、該吸気通
路101に開口するスタータ燃料用ノズル102と、吸気通路
101を開閉するスタータ弁103と、スタータ弁103を動作
させるワイヤー104、スプリング105およびキャップ106
からなっている。In this embodiment, the carburetor 34 does not have a choke valve, but is instead provided with a starting carburetor 100 that supplies a rich mixture bypassing the throttle valve 64 that is fully closed at startup. The starting carburetor 100 is formed integrally with the carburetor 34 and bypasses the throttle valve 64, an intake passage 101 opening to the intake passage 101, a starter fuel nozzle 102, an intake passage
A starter valve 103 for opening and closing 101, a wire 104 for operating the starter valve 103, a spring 105, and a cap 106
Consists of
この気化器では、スロットルバルブ64の両軸受部64a,
64bの吸気通路の上流側且つ上方の真上に潤滑油の吐出
口106a,106bが吸気通路34aの壁に開口している。In this carburetor, both bearing portions 64a of the throttle valve 64,
Discharge ports 106a and 106b for lubricating oil are opened in the wall of the intake passage 34a on the upstream side and directly above the intake passage 64b.
［発明の効果］ 以上説明したように本発明によれば、潤滑油供給量の
少ない低速で長い時間運転後、高速にすることなく運転
を停止し、その後長期に海岸地域に保管する場合であっ
ても、上流側が上，下流側が下に位置するように上下方
向に延在する吸気通路に、両側の軸受部が該吸気通路の
壁に軸支されるように設けられた回転式バルブで、潤滑
油の吐出口を、前記回転式バルブの軸受部の真上に位置
して吸気通路の壁に開口させたので、吐出口から供給さ
れた潤滑油は、吸気流および重力により吸気通路の表面
を流れ、前記軸受部に確実に供給され、該吸気通路に設
けられた回転式バルブの固着を確実に防止することがで
き、回転式バルブの固着によるエンジン運転上の障害を
防止することができる。[Effects of the Invention] As described above, according to the present invention, after a long time operation at a low lubricating oil supply rate at a low speed, the operation is stopped without increasing the speed and then stored in a coastal area for a long time. In addition, a rotary valve provided in an intake passage extending vertically so that the upstream side is located upward and the downstream side is located downward, and bearing portions on both sides are pivotally supported by walls of the intake passage. Since the lubricating oil discharge port is located just above the bearing of the rotary valve and opened to the wall of the intake passage, the lubricating oil supplied from the discharge port is supplied to the surface of the intake passage by the intake air flow and gravity. And reliably supplied to the bearing portion, and it is possible to reliably prevent the rotary valve provided in the intake passage from sticking, thereby preventing an engine operation trouble due to the sticking of the rotary valve. .
第１図は本発明の分離潤滑式エンジンを搭載する小型滑
走艇の長手方向の要部断面図、第２図は分離潤滑式エン
ジンの要部横断面図、第３図は本発明の第１実施例を図
示する吸気装置の断面図、第４図は第３図のIV−IV線に
沿った断面図、第５図は本発明の第２実施例の分離潤滑
式２サイクルエンジンの気化器の断面図である。 34a……吸気通路、35……オイルポンプ、63……チョー
クバルブ、 63a,63b……チョークバルブ軸受、64……スロットルバ
ルブ、 64a,64b……スロットルバルブ軸受、70……オイルタン
ク、 75a,75b……吐出口、106a,106b……吐出口。FIG. 1 is a longitudinal sectional view of a main part of a personal watercraft equipped with a separate lubrication engine of the present invention, FIG. 2 is a cross sectional view of a main part of a separate lubrication engine, and FIG. FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is a carburetor of a separate lubricated two-cycle engine according to a second embodiment of the present invention. FIG. 34a ... intake passage, 35 ... oil pump, 63 ... choke valve, 63a, 63b ... choke valve bearing, 64 ... throttle valve, 64a, 64b ... throttle valve bearing, 70 ... oil tank, 75a, 75b ... discharge ports, 106a, 106b ... discharge ports.
フロントページの続き (56)参考文献 特開 昭64−32010（ＪＰ，Ａ) 実開 昭54−66028（ＪＰ，Ｕ) 実開 平２−87916（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F01M 3/00 F02D 9/10 Continuation of the front page (56) References JP-A-64-32010 (JP, A) JP-A 54-66028 (JP, U) JP-A 2-87916 (JP, U) (58) Fields investigated (Int) .Cl. 7 , DB name) F01M 3/00 F02D 9/10
Claims (1)
上下方向に延在する吸気通路に、両側の軸受部が該吸気
通路の壁に軸支されるように設けられた回転式バルブを
潤滑するよう、オイルタンク内の潤滑油をオイルポンプ
により吸気通路に吐出するようにした分離潤滑式２サイ
クルエンジンにおいて、潤滑油の吐出口を、前記回転式
バルブの軸受部の真上に位置して前記吸気通路の壁に開
口させたことを特徴とする分離潤滑式２サイクルエンジ
ン。1. A rotary valve provided in an intake passage extending vertically so that an upstream side is located at an upper side and a downstream side is located at a lower side, and bearing portions on both sides are provided so as to be supported by walls of the intake passage. In a separate lubrication two-cycle engine in which lubricating oil in an oil tank is discharged into an intake passage by an oil pump so as to lubricate the oil, the discharge port of the lubricating oil is positioned directly above the bearing of the rotary valve. A separate lubrication type two-stroke engine having an opening in a wall of the intake passage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319693A JP3031996B2 (en) | 1990-11-22 | 1990-11-22 | Separate lubrication two-stroke engine |
| US07/796,395 US5195481A (en) | 1990-11-22 | 1991-11-22 | Two-cycle engine with separate lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319693A JP3031996B2 (en) | 1990-11-22 | 1990-11-22 | Separate lubrication two-stroke engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04191409A JPH04191409A (en) | 1992-07-09 |
| JP3031996B2 true JP3031996B2 (en) | 2000-04-10 |
Family
ID=18113132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2319693A Expired - Fee Related JP3031996B2 (en) | 1990-11-22 | 1990-11-22 | Separate lubrication two-stroke engine |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5195481A (en) |
| JP (1) | JP3031996B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014167220A (en) * | 2013-02-28 | 2014-09-11 | Iifas Co Ltd | Locking connection method of high nut |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716911A (en) * | 1990-10-26 | 1998-02-10 | Virginia Tech Intellectual Property, Inc. | Method for reducing friction and wear of rubbing surfaces using anti-wear compounds in gaseous phase |
| JP3261636B2 (en) * | 1993-09-08 | 2002-03-04 | 三信工業株式会社 | Outboard motor blow-by gas intake structure |
| US5570661A (en) * | 1994-04-22 | 1996-11-05 | Sanshin Kogyo Kabushiki Kaisha | Induction system lubricant system for two-cycle engines |
| JPH07317520A (en) * | 1994-05-27 | 1995-12-05 | Sanshin Ind Co Ltd | Rust preventive device for valve of four cycle engine in small-sized marine vessel |
| JP3314128B2 (en) * | 1995-12-28 | 2002-08-12 | 富士重工業株式会社 | Separate lubrication two-cycle engine |
| JPH09301286A (en) * | 1996-03-15 | 1997-11-25 | Yamaha Motor Co Ltd | Oil filter arrangement structure for water vehicle |
| JP2759789B2 (en) * | 1996-06-03 | 1998-05-28 | 川崎重工業株式会社 | Small planing boat internal combustion engine |
| JPH10194195A (en) * | 1996-12-28 | 1998-07-28 | Yamaha Motor Co Ltd | Compact ship |
| JPH10252508A (en) * | 1997-03-10 | 1998-09-22 | Honda Motor Co Ltd | Carburetor for two-cycle engine |
| JPH10266898A (en) * | 1997-03-21 | 1998-10-06 | Yamaha Motor Co Ltd | Intake system lubricating device in propulsion device for marine vessel |
| US5954555A (en) * | 1997-12-29 | 1999-09-21 | Yamaha Hatsudoki Kabushiki Kaisha | Oil supply system for personal watercraft |
| JP2000227017A (en) * | 1999-02-03 | 2000-08-15 | Yamaha Motor Co Ltd | Jet propulsion boat |
| JP2002364328A (en) * | 2000-09-20 | 2002-12-18 | Sanshin Ind Co Ltd | Ventilation system for small-sized ship engine |
| JP2003106128A (en) | 2001-09-28 | 2003-04-09 | Sanshin Ind Co Ltd | Lubricating device for two-cycle engine |
| US7198020B1 (en) | 2006-03-13 | 2007-04-03 | Steven G Beddick | Lubrication systems and methods for an internal combustion engine |
| US8746407B2 (en) | 2011-05-05 | 2014-06-10 | Andrew Rosca | Centrifugal lubrication apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1204536A (en) * | 1966-12-03 | 1970-09-09 | Jawa Np | Improvements in or relating to the lubrication of two-stroke internal combustion engines |
| US3545417A (en) * | 1968-11-22 | 1970-12-08 | Toyo Kogyo Co | Carburetor |
| JPS4899506A (en) * | 1972-04-03 | 1973-12-17 | ||
| US3908612A (en) * | 1972-05-18 | 1975-09-30 | Daimler Benz Ag | Rotary piston internal combustion engine |
| JPS585420A (en) * | 1981-07-01 | 1983-01-12 | Sanshin Ind Co Ltd | Lubricator for two-cycle internal combustion engine |
| US4615305A (en) * | 1983-05-17 | 1986-10-07 | Sanshin Kogyo Kabushiki Kaisha | Separate lubricating system for marine propulsion device |
| JPS60178915A (en) * | 1984-02-24 | 1985-09-12 | Honda Motor Co Ltd | Lubricating oil supply controller of two-cycle engine |
| US5020484A (en) * | 1989-11-06 | 1991-06-04 | Fuji Jukogyo Kabushiki Kaisha | Lubricating system for a two-cycle engine |
-
1990
- 1990-11-22 JP JP2319693A patent/JP3031996B2/en not_active Expired - Fee Related
-
1991
- 1991-11-22 US US07/796,395 patent/US5195481A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014167220A (en) * | 2013-02-28 | 2014-09-11 | Iifas Co Ltd | Locking connection method of high nut |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04191409A (en) | 1992-07-09 |
| US5195481A (en) | 1993-03-23 |
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